Extraction of optical codes from an image

摘要

It is possible to provide a code using an optical symbol which can be read with a high accuracy even under an environment of a low printing accuracy including printing on an article which can be easily deformed. Cells are arranged in a linear shape and particular data is indicated by a state of element in each of the cells (whether the element is colored). Especially a particular color is fixed to each of the elements and it is possible to use the two states whether the color is attached or not. This state can express the data. Accordingly, it is possible to realize a code system capable of reading data if the element sequence continuity and the form (topology) as the linear state are maintained and cutting the code from a captured image.